// 	Name: 03.c
//	Description: Chapter 2 project 3
//	Author: StableGenius
//	Date: 2020-05-06
//	Email: feng@dongfa.pro

#include <stdio.h>

int main(void)
{
    float r;
    
    printf("Please Enter Your Radius: ");
    scanf("%f", &r);
    
    printf("The volume of the ball with r=%.2f is %.2f\n", r, 4.0f/3.0f*3.14f*r*r*r);
	
    return 0;
}
